I've been learning a lot of Mennonite history recently by reading Whisky Prajer's blog.  His 3 part series on Mennonite Martyrs is well worth checking out--
See Shared Texts, and Mennonites,   Anneken Haunts Me  and  "Fools In Old-Style Hats & Coats": A 21st Century Blasphemer Reads Anneken Heyndriks